The Relation of Mollusks to Fish in Oneida Lake 101 
CRUSTACEA, 
Amphipod (Gammarus fasciatus), abundant. 
INSECTA. 
Caddis-fly cases (Leptocella spec- Damsel-fly nymph (H#nallagma 
ies), common. species), common. 
Caddis-fly larve (Oecetis resur- Damsel-fly nymph (Hnallagma sig- 
gens), not common, natum), not common. 
Caddis-fly larvz (Polycentropid), 
rare. 
IX. Deep Water Type. (Fig. 30.) 
Station XLI. This type of habitat occurs only in the 
center of the lake some distance from the shore. The water 
is from 12 to 16 feet deep and the bottom is sandy with 
occasional boulders. There is little or no vegetation. The 
only life observed on the bottom was three species of clams. 
MOLLUSCA. 
Elliptio complanatus. Lampsilis borealis. 
Lampsilis radiata. 
2. CREEK TyYPEs. 
A number of creeks, of greater or less size, empty into the 
lake. Several very diverse habitats are provided by these 
streams, varying with the flow of water and the character 
of the bottom. In some eases the species are different from 
those found in the lake. 
X. Deep Creek Type, Still Water. 
Station VII. This habitat is at the mouth of the creek. 
The area is protected by the swampy banks on all sides, 
except the mouth. An embayment on the north side of the 
ereek affords quiet water for a heavy growth of water lilies 
and other aquatics. The raising of the water level has flooded 
the swamps bordering Big Bay and covered the banks of 
this habitat with a foot or two of water. The vegetation con- 
sists of floating, submerged and aerial species, as noted below: 
Black Willow (Salia nigra var. Broad-leaved Arrow-head (WSagit- 
falcata). taria latifolia) . 
Swamp Loosestrife (Decodon verti- Cow Lily (Nymphwa advena). 
cillatus). 
